Modified Simpson Methane Flow Proportional Alpha Counter and Fission Counter
Description:
Abstract: This technical report consists of series of drawings of the instrument with the following explanation. The modification of the Simpson Methane flow proportional counter consists of a means for inserting and replacing samples into the chamber through an air-lock device which avoids the introduction of even a small quantity of air into the active volume of the chamber. This is accompanied by sweeping out the small volume of the air-lock containing the sample with methane gas before the…
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Date:
July 9, 1947
Creator:
Freedman, M. S.
Partner:
UNT Libraries Government Documents Department